Floor-scraping machine.



G. T. WOODRUPF. FLOOR SGBAPING MACHINE. APPLIIOATION Hum 00114 191;.

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FLOOR SORAPING MACHINE. I

' APPLICATION FILED 00114, 1911.

Patented Mar. 26, 1912.

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G. T. WOODRUPF.

FLOOR SGRAPING MACHINE. "APPLICATION FILED 001214, 1911.

Patented Mar. 26, 1912.

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A uuuuuuu COLUMBIA PLANOGRAPH CO..WASH|NGTON. D. c.

UNITED STATES PA ENT OFFICE.

CHARLES T. WOODRUFF, OF URBANA, CHIC.-

IFLOOR-SORAPING- MACHINE.

Specification of Letters Patent.

Application fi led October 14, 1911. Serial No. 654,572.

To all whom it may concern:

Be it known that I, CHARLES T. Woon- RUFF, citizen of the United States,residing at Urbana, in the county of Champaign and State of Ohio, haveinvented certain new and useful Improvements in Floor-Scraping Machines;and I do declare the following to be a full, clear, and exactdescriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same, reference being had to theaccompanying drawings, and to the letters and figures of referencemarked thereon, which form a part of this specification.

This invention relates to new and useful improvements in power drivenfioor-soraping machines.

The object of the invention is to provide a machine for scraping orsurfacing floors that is simple in construction and efiicient inoperation.

To the above ends the machine is specially adapted to give the floor asmooth surface and to finish the floor adjacent to the base board, aswill be fully described in the specification and particularly pointedout in the claims.

Referring to the accompanying drawings, Figure 1,.is a top plan view ofthe machine with parts broken away. Fig. 2 is a side elevation of thesame; Fig. 3 is a section on the line wa of Fig. 1; Fig. 4 is a sectionon the line bb of Fig. 1; Fig. 5 is a detail view of the rotatingcutting head, and Fig. 6 is a detail sectional view of one of thescrapers.

Referring more particularly to the drawings, 1 represents a deck placeprovided with side members 2. The side members 2 are provided withbearings 3 which receive the axle 4 of wheels 5. The deck 1 is alsoprovided with downward extending members 6 provided with journals 7which receive a shaft 8. The ends of the shaft 8 are connected to stubshafts 9 by universal joints 10. Mounted on the stub shafts 9 are wheels11 provided with ball bearings 12. The bearings 12 are mounted in cups13 provided with extensions 14 which are pivoted at 15 to brackets 16extending from the downward extending members 6. The wheels 11 aresteering wheels and are rocked on the pivots 15 by the following means.Projecting from the upper extensions 14 are arms 17 pivotally connectedat 28 to a link or rod 18. ,See Fig. l. The link 18 ispivotally'connected to a crank 19 mounted on the lower end of a verticalrock shaft 20. The lower end of the shaft 20 is journaled in a bearing21 mounted on the deck 1, while the upper end is journaled in a bracket22 extending from the upper side of the deck. The upper end of the saidshaft 20 is provided with a crank handle 29, by means of which the shaft20 and the wheels 11 are rocked. All of the wheels 5 and 11, aredriving, wheels and are provided withv rubber tires 23. The shafts 4 and8 are rotated to drive the wheels by the following means. The saidshafts are provided with bevel gears 24 engaged by gears 25 mounted onthe ends of a shaft 26 journaled in bearings 27 extending from the underside of the deck 1. The gears 24 are mounted on opposite sides of thegears 25 and the shaft 26. The shafts 4 and 8 therefore rotate in thesame direction. Mounted on the shaft the motor 41 the cone 33 is drivenin one direction and the wheels 5 and 11 in opposite directions byshifting the sleeve 32 and the cones 30 and 31. The sleeve 32 isprovided with a groove 42 which receives the end 43 of a sliding member44. This member 44 is mounted in bearings 45 on the under side of thedeck 1, and one end thereof is connected at 50 to a lever 46 pivoted, at47. The upper end of the lever 46 is provided with two foot members 48and 49. When the foot member 48 is depressed the cone 30 will be placedin engagement with the cone 33 and the machine will be driven in onedirection, and when the other foot-member 49 is depressed, the cone 31will be placed in engagement with the cone 33, and the machine will bedriven in the other direction.

Pivoted to the side members 2 at 51 are rocking side members 52 the endsof which Patented Mar. 26, 1912. v

are provided with upward extensions 53 ed as follows: The blades 55 areclamped between cross-members 56 and 57. The crossmembers are providedwith upward extensions 59, which are pivoted to the rods 5 1 and whichpermit the frames to be swung upward and the blades to be easilyremoved. The cross-members 57 are provided with extensions 60 pivoted at61 to the extensions 59. The upper ends of the extensions 60 areprovided with thumb screws 63 which engage the rods 5e and by means ofwhich the blades 55 are clamped between the members 56 and 57. Theextensions 59 are provided with a cross rod 6 the ends of which normallyrest in recesses 65 in the ends of the rocking side members 52. hen themachine is traveling to the left, as seen in Fig. 2, the left scrapingblade-55 is depressed and is in engagement with the floor, but when themachine is traveling to the right, the right scraping blade is incontact with the floor. The rocking side members 52 are actuated toplace either of the blades in con tact with the floor, by a lever 66pivoted at 67 to the deck. The lower end of the lever 66 is attached toa link 72 which in turn is attached to a crank 68 mounted on a rockshaft 69 journaled in the side members 2. The shaft 69 is provided withcranks 70 which are connected to one of the rods 54 by links 71. Vhenthe lever 66 is shifted, the side frames 52 will be rocked, and theposition of the lever 66 determines the blade which is in contact withthe floor. The scraping blades 55 may be held in a normal position whenboth blades are out of engagement with the floor, by a segment 92provided with a recess 93 adapted to, receive a sliding bolt 9 L mountedon the lever 66 and controlled by a. pivotal finger member 95. The angleat which the scraping blades 55 engage the floor is selected by screws73 mounted in the cross-members 57. To prevent the scraping bladeschattering, there is mounted in front of said blades, plates 74: whichare connected to a cross-member 75 by upward extensions 76. Thecross-member 75 is attached to the cross-member 57 by screws 77 whichprevent the plates 74: being removed. The plates 74L engage the highplaces in the floor and guide the scraping blades in a true horizontalline, thereby preventing said blades chattering, and producing a smoothsurface to the floor. The blades are placed longitudinally at a slightangle as is shown by the dotted lines, in Fig. 1, which prevents saidblades becoming caught in the cracks in the floor.

To effectually smooth the surface of the floor close to the base boards,a rotating cutter head 80 is provided. This is mounted on the deck plate1 and is driven from the motor 41. This cutter head 80 is shown indetail in Fig. 5 and is provided with a conical face 81 on its lowerside. Mounted within the head 80 is a plurality of scraping blades 90held therein by means of cap screws 82 and the scraping angle of whichis adjusted by screws 83. The said head 80 is mounted on the lower endof a shaft 84: journaled in bearings 85 attached to a bracket 86extending from the deck plate 1. The upper end of the shaft 8 1 issplined to a bevel gear 91 in mesh with a bevel gear 87 on one end of ashaft 88. Mounted on the other end of the shaft 88 is a bevel gear 89 inmesh with the gear 38 which is driven from the motor as beforedescribed. The shaft 84 is placed on an angle as is shown in Fig. 5, andas the face 81 is conical, the blades 90 will only engage the floor whentraveling in one direction which insures a smoother finish. The bracket86 is so placed on the deck 1 as to permit the periphery of the cutterhead 80 to extend past the side of the machine,and which permits thescraping blades 90 of the cutter head to more effectually engage thefloor near the base boards. The cutter head 80 may be elevated andlowered and pressed against the floor, by a lever 96 pivoted at 97 tothe bracket 86. The lower end 98 of the lever 96 rides in a race 99 on aspool 100 mounted on the shaft 84. The cutter head may be held in anelevated position by a pin (not shown), but which may be inserted in arecess 101 in the bracket 86 and in the path of the lever 96.

WVithout limiting myself to the precise arrangement shown and described,which may be varied within the scope of the claims, I claim:

1. In a machine of the type specified, the combination with aframe-work, and a longitudinal bar mounted on each side of saidframework and pivoted at its center to said frame-work, of clampingframes mounted on the ends of said bars, scraping blades mounted in saidclamping frames, and a lever connected to said bars to rock the same ontheir pivots, whereby only one of said scraping blades may be inengagement with the floor at a time.

2. In a machine of the type specified, the combination with aframe-work, and longitudinal bars pivoted at their centers to saidframework, of clamping frames pivotally mounted on the ends of saidbars, scraping blades mounted in said clamping frames, said clampingframes being adapted to be swung upwardly to permit the removal of saidblades, and means for rocking said bars on their pivots to permit one orthe other of said blades to engage the floor.

8. In a machine of the type specified; the combination with a framework; of longitudinal bars pivoted to said frame work; of a clampingframe pivotally mounted on :said bars; a scraping blade mounted in saidclamping frame, said clamping frame being adapted to be swung upwardlyto permit of the removal of the blade; and means for rocking said barson their pivots to permit the scraping blade to engage and disengage thefloor.

4. In a machine of the type specified; the combination With a framework; of longitudinal bars pivoted at their centers to said frame work;of clamping frames pivotally mounted on the ends of said bars; ascraping blade mounted in each clamping frame; a plate mounted on eachclamping frame in front of the blades and adapted to engage the floor toguide the blades; and means for rocking said bars.

5. In a machine of the type specified; the

combination with a frame work; of longitudinal bars pivoted to saidframe work; of a clamping frame pivotally mounted on said bars; ascraping blade mounted in said clamping frame, said clamping frame beingadapted to be swung upwardly to permit of the removal of the blade; aplate mounted on said clamping frame in front of the blade and adaptedto engage the floor to guide the blade; and means for rocking said bars.

In testimony whereof I affix my signature, in presence of two witnesses.

CHARLES T. WOODRUFF. Witnesses:

R. J. MOCARTY, MA'TTHEW SEIBLER.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. 0.

